Buggy code:
public class VaultInteraction { private VaultSession vaultNISession ; public VaultInteraction ( VaultSession vaultSession ) { } public void start ( ) { Console console = System . console ( ) ; if ( console == null ) { System . err . println ( "No<seq2seq4repair_space>console." ) ; System . exit ( 1 ) ; } Scanner in = new Scanner ( System . in ) ; while ( true ) { String commandStr = "Please<seq2seq4repair_space>enter<seq2seq4repair_space>a<seq2seq4repair_space>Digit::<seq2seq4repair_space>0:<seq2seq4repair_space>Store<seq2seq4repair_space>a<seq2seq4repair_space>secured<seq2seq4repair_space>attribute<seq2seq4repair_space>" + ( "<seq2seq4repair_space>1:<seq2seq4repair_space>Check<seq2seq4repair_space>whether<seq2seq4repair_space>a<seq2seq4repair_space>secured<seq2seq4repair_space>attribute<seq2seq4repair_space>exists<seq2seq4repair_space>" + "<seq2seq4repair_space>2:<seq2seq4repair_space>Exit" ) ; System . out . println ( commandStr ) ; int choice = in . nextInt ( ) ; switch ( choice ) { case 0 : System . out . println ( "Task:<seq2seq4repair_space>Store<seq2seq4repair_space>a<seq2seq4repair_space>secured<seq2seq4repair_space>attribute" ) ; char [ ] attributeValue = VaultInteractiveSession . getSensitiveValue ( "Please<seq2seq4repair_space>enter<seq2seq4repair_space>secured<seq2seq4repair_space>attribute<seq2seq4repair_space>value<seq2seq4repair_space>(such<seq2seq4repair_space>as<seq2seq4repair_space>password)" ) ; String vaultBlock = null ; while ( ( vaultBlock == null ) || ( ( vaultBlock . length ( ) ) == 0 ) ) { vaultBlock = console . readLine ( "Enter<seq2seq4repair_space>Vault<seq2seq4repair_space>Block:" ) ; } String attributeName = null ; while ( ( attributeName == null ) || ( ( attributeName . length ( ) ) == 0 ) ) { attributeName = console . readLine ( "Enter<seq2seq4repair_space>Attribute<seq2seq4repair_space>Name:" ) ; } try { <START_BUG> vaultNISession . addSecuredAttribute ( vaultBlock , attributeName , attributeValue ) ; <END_BUG> } catch ( Exception e ) { System . out . println ( ( "Exception<seq2seq4repair_space>occurred:" + ( e . getLocalizedMessage ( ) ) ) ) ; } break ; case 1 : System . out . println ( "Task:<seq2seq4repair_space>Verify<seq2seq4repair_space>whether<seq2seq4repair_space>a<seq2seq4repair_space>secured<seq2seq4repair_space>attribute<seq2seq4repair_space>exists" ) ; try { vaultBlock = null ; while ( ( vaultBlock == null ) || ( ( vaultBlock . length ( ) ) == 0 ) ) { vaultBlock = console . readLine ( "Enter<seq2seq4repair_space>Vault<seq2seq4repair_space>Block:" ) ; } attributeName = null ; while ( ( attributeName == null ) || ( ( attributeName . length ( ) ) == 0 ) ) { attributeName = console . readLine ( "Enter<seq2seq4repair_space>Attribute<seq2seq4repair_space>Name:" ) ; } if ( ! ( vaultNISession . checkSecuredAttribute ( vaultBlock , attributeName ) ) ) System . out . println ( ( ( ( ( "No<seq2seq4repair_space>value<seq2seq4repair_space>has<seq2seq4repair_space>been<seq2seq4repair_space>store<seq2seq4repair_space>for<seq2seq4repair_space>(" + vaultBlock ) + ",<seq2seq4repair_space>" ) + attributeName ) + ")" ) ) ; else System . out . println ( ( ( ( ( "A<seq2seq4repair_space>value<seq2seq4repair_space>exists<seq2seq4repair_space>for<seq2seq4repair_space>(" + vaultBlock ) + ",<seq2seq4repair_space>" ) + attributeName ) + ")" ) ) ; } catch ( Exception e ) { System . out . println ( ( "Exception<seq2seq4repair_space>occurred:" + ( e . getLocalizedMessage ( ) ) ) ) ; } break ; default : System . exit ( 0 ) ; } } } }

Fix:
vaultNISession . addSecuredAttributeWithDisplay ( vaultBlock , attributeName , attributeValue ) ;